KGaA, Weinheim.Cardiovascular magnetic resonance imaging has proven valuable for the assessment of structural and functional cardiac abnormalities. Even although it is an established imaging method in small animals, the long acquisition times of gated or self-gated techniques still limit its widespread application. In this study, the application of tiny golden angle radial sparse MRI (tyGRASP) for real-time cardiac imaging was tested in 12 constitutive nexilin (Nexn) knock-out (KO) mice, both heterozygous (Het, N = 6) and wild-type (WT, N = 6), and the resulting functional parameters were compared with a well-established self-gating approach. Real-time images were reconstructed for different temporal resolutions of between 16.8 and 79.8 ms per image. The suggested approach was additionally tested for dobutamine stress and qualitative first-pass perfusion imaging. Measurements were repeated twice within 2 weeks for reproducibility assessment. In direct comparison with the high-quality, self-gated technique, the real-time app functional parameters, and has the potential to investigate real-time and beat-to-beat changes. © 2020 The Authors. NMR in Biomedicine published by John Wiley &amp; Sons Ltd.This journal recently published a paper by Sharpe et al., entitled "Necessary components of psychological treatments in chronic pain management programs A Delphi study" (Sharpe, Jones, Ashton-James, Nicholas, &amp; Refshauge, 2020). These researcher sought the views of authors of relevant RCTs published up to September 2016 and supplemented these with input from psychologists working in pain management programs in Australia. This article is protected by copyright. All rights reserved.Epidermal growth factor receptor (EGFR) expression and activation are the major causes of metastasis in cancers such as head and neck squamous cell carcinoma (HNSCC). However, the reciprocal effect of EGF-induced cyclooxygenase-2 (COX-2) and angiopoietin-like 4 (ANGPTL4) on HNSCC metastasis remains unclear. In this study, we revealed that the expression of ANGPTL4 is essential for COX-2-derived prostaglandin E2 (PGE2 )-induced tumor cell metastasis. We showed that EGF-induced ANGPTL4 expression was dramatically inhibited with the depletion and inactivation of COX-2 by knockdown of COX-2 and celecoxib treatment, respectively. PGE2 induced ANGPTL4 expression in a time- and dose-dependent manners in various HNSCC cell lines through the ERK pathway. In addition, the depletion of ANGPTL4 and MMP1 significantly impeded the PGE2 -induced transendothelial invasion ability of HNSCC cells and the binding of tumor cells to endothelial cells. The induction of molecules involved in the regulation of epithelial-mesenchymal transition (EMT) was also dependent on ANGPTL4 expression in PGE2 -treated cells. On the other hand, the depletion of ANGPTL4 further blocked PGE2 -primed tumor cell metastatic seeding of lungs. These results demonstrate that the EGF-activated PGE2 /ANGPTL4 axis enhanced HNSCC metastasis. The concurrent expression of COX-2 and ANGPTL4 in HNSCC tumor specimens provides the insight into potential therapeutic targets for the treatment of EGFR-associated HNSCC metastasis. This article is protected by copyright. All rights reserved.Through quantum-chemical calculations, we investigate a family of metal-organic frameworks (MOFs) containing triazolate linkers, M 2 X 2 (BBTA) (M = metal, X = bridging anion, H 2 BBTA = 1 H ,5 H -benzo(1,2-d4,5-d')bistriazole), for their ability to form terminal metal-oxo sites and subsequently activate the C-H bond of methane. By varying the metal and bridging anion in the framework, we show how to significantly tune the reactivity of this series of MOFs. The electronic structure of the metal-oxo active site is analyzed for each combination of metal and bridging ligand, and we find that spin density localized on the oxo ligand is not an inherent requirement for low C-H activation barriers. For the Mn- and Fe-containing frameworks, a transition from ferromagnetic to antiferromagnetic coupling between the metal binding site and terminal oxo ligand during the C-H activation process can greatly reduce the kinetic barrier, a unique case of two-state reactivity without a change in the net spin multiplicity. © 2020 WILEY-VCH Verlag GmbH &amp; Co. KGaA, Weinheim.Chemicals synthesized directly from CO2 are a sustainable alternative to fossil fuels. Increasing efficiency and specificity will require a combination of chemical and biological processes. © 2020 The Authors. Published under the terms of the CC BY 4.0 license.Tailoring personalized cancer nanomedicines demands detailed understanding of the tumor microenvironment. https://www.selleckchem.com/products/tertiapin-q.html In recent years, smart upconversion nanoparticles with the ability to exploit the unique characteristics of the tumor microenvironment for precise targeting have been designed. To activate upconversion nanoparticles, various bio-physicochemical characteristics of the tumor microenvironment, namely, acidic pH, redox reactants, and hypoxia, are exploited. Stimuli-responsive upconversion nanoparticles also utilize the excessive presence of adenosine triphosphate (ATP), riboflavin, and Zn2+ in tumors. An overview of the design of stimulus-responsive upconversion nanoparticles that precisely target and respond to tumors via targeting the tumor microenvironment and intracellular signals is provided. Detailed understanding of the tumor microenvironment and the personalized design of upconversion nanoparticles will result in more effective clinical translation. © 2020 WILEY-VCH Verlag GmbH &amp; Co. KGaA, Weinheim.KRAS homo-dimerization has been implicated in the activation of RAF kinases, however, the mechanism and structural basis remain elusive. We developed a system to study KRAS dimerization on nanodiscs using paramagnetic relaxation enhancement (PRE) NMR, and determined distinct structures of membrane-anchored KRAS dimers in the active GTP- and inactive GDP-loaded states. Both dimerize through an α4-α5 interface, but the relative orientation of the protomers and their contacts differ substantially. Dimerization of KRAS-GTP, stabilized by electrostatic interactions between R135 and E168, favours an orientation on the membrane that promotes accessibility of the effector-binding site. Remarkably, 'cross'-dimerization between GTP- and GDP-bound KRAS molecules is unfavorable. These models provide a vital platform to elucidate the structural basis of RAF activation by RAS and to develop newer inhibitors that can disrupt the KRAS dimerization. The methodology developed to specifically probe the intermolecular interactions within KRAS dimer is applicable to many other farnesylated small GTPases.